The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2001
Filed:
Jan. 28, 1999
James R. Emmert, Boise, ID (US);
Mark D. Montierth, Meridian, ID (US);
Hewlett-Packard Co., Palo Alto, CA (US);
Abstract
There is disclosed a configuration for multiplexing the USB signals onto the IEEE 1284 signals thereby allowing a single connector on the device to support either protocol. Within the device, each protocol block is connected to transceiver to compensate for differences in driver/receiver characteristics for the protocol. The outputs of the transceivers are connected to a signal conditioner to allow proper selection of termination impedance. A controller senses whether a passive adapter is attached to the connector. When the passive adapter is not connected the controller selects the 1284 protocol and its associated transceiver and signal conditioning. If the passive adapter is connected, the controller selects the USB protocol and its associated transceiver and signal conditioning. The passive adapter connects pre-selected pins on the device's connector to a USB connector. There is also described an arrangement to allow the passive adapter and device to provide USB hub functions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile